Pneumatic ladle pump



l. TORNBERG 1,773,799

PNEUMATIC LADLE PUMP n Original Fab. 2, 3 sheets-Sheetl Aug. 26, 1930,

' Aug- 26, 1930 y TORNBE'RG l1,773,799

PNEUMATIC LADIE PUMP Original Filed Feb. 2, 1926 3 Sheetsheet 2 AUS- 25, 1930-' 1. TORNXBE'RG PNEUMATIG LADLE rml? originalFiled Feb. 2; 192e' 3'sht$ sheet 5 .NNI

I l I l l l 7/ l i l 1 I Patented Aeg. 26,1930

L UNITED STATES" PATENT OFFICEv rsIDORmORNBERG, OF PLAINFIELD, NEW JERSEY, ASSIGNOR 4fro WOOD NEWSPAPER MACHINERY CORBORATION, OF

NEW Yo'RigN. Y., A CORPORATION OF NEW YORK l PNEUMATIO LADIE PUMP e vApplicationinearemuarye,'1926, seria;`

molten metalto a'ladle which will hold only a sufficient amount of `metal byan intermit tent' Operationl of asvalve to make alstereotype plate,and t'O'mount the pouring spout. of the pump in such `a way, before casting,l that it can 'be warmed up'by circulating metal through it. Other objects and advantages ofv theinventionA will appearxhereinafter@ Reference isto be hadto the accompanying l three sheets of drawings'in which n Fig. 1 's a'plan of .aY portion of a casting machine illustratingv this invention;

Fig. V2 is va sidevview Of'thesame partly in section showingvthe ladle in its upright position; l Y j f `Fig'.l 3 vis the same "section through the ladle, but showingit in a pouringposition;

` and Fgsyetan-d 5 are detail sectional j'views Of therumnvalve,

Instead ofemploying the customarygear pump continuously drivenyfrom a sour-ceo powerA such as ane electric inotor orv the like, p I employ the.comparatively.inexpensivefand simplemethod of forcing metal from within the pot into the ladle pneumatically.

Referring to the drawingsl have shown areceptacle 1() located 'within a melting pot 11 near one side and mostly below the level of the moltenfmetal.V Itis suspended by meansof brackets 13Ywhich form a part of said receptacle; ExtendingV up from said receptacle is a discharge tube 14. Centered and supported by the discharge tube 14 is a. swinging spout 15 in which a'ladle 1G is pivoted at16a. The ladle is provided with a counter balance weight 17 also ya deflecttoggo to the bottom andforces the metal already ythere tothe top, where. any surplus i may be discharged back into vthe melting pot 11 'through two side openings 19, Thus a constant level is maintained within the'ladle wall 18 which causes the incoming metal 110.85570. Renewed January 10,1930.-

and a'supply of fresh,hot molten metalis assuredof uniform temperature throughout. Theladle isl also provided with a cover plate 2O andl a drainj21.

Pivoted at'one side of-'the spoutl .15 is an arm'22 vhavingV a `connection 23 provided with a handle 24.4 This handle extends out overv the casting machine 25 so as to be easily accessibleto thevopervator.v

The receptacle 10 isprovided with achamber 26 and a valve 27 atthe'bottom. A valve seat 28 'is pro-vided and 'a limiting stop 29` `for the valve 27. Airis vadmitted into they receptacle through the pipe 33 at regular intervals of time, s'o-that 'the amount of metal forced out ofthe receptacle 10 into the ladle 16 kmay Ybe replaced with metal from Within the pot. This is *accomplished bymeans of the valve 27 which,"because of the difference of specific gravity, risesfand opens the way for the passage "of metal'into there'ceptacle 10. kAs, soon asvpressure is applied by means `of compressed air, the rushk of metal closes the valve 27so1that no metal may escape` from` the receptacle'lO back into thermelting 'pot 11,-fbut instead the pressure forces whatever metal-v is.v trapped f in vthe receptacle 10Y up ythrough the discharge tube metal will run back into the melting pot 11 through the drain openings19. n e The exterior surfaces 301and 31 ofthe dis-Y chargetube114are finishedlso that the casting L comprising a `partof spout 15 can rotatek y holes .40 sotliat metal maybe delivered into a nozzle 32 yin either of the two `positions Occupiedvbythe spout 1 5. y l* j l Extending up from the 'top ofthe chamber-26 isa pipe 33whichisconnected to'a three-way air valve 34 for operating the' M 14 and y f nozzle 32.*into. the ladle 16.` Any surplus pump. Y. Thisnvalve is provided with anfinlet .pipe135 andan outlet pipe 36.

tached to the connection 23 which tilts thek ladle 16 on its pivots 16el into the position shown in Fig. 3. This empties the entire contents of the ladle 16 through the spout 15 into the casting machine 25. The counter balance 17 returns the empty ladle to its original-position for refilling for its next operation.

It will be seen that a very simple and efficient method of continuously raising the metal within the melting pot to the proper height for easy delivery into the casting box is provided, and only the desired amount of metal can be held in the ladle.

Although I have illustrated and described only one form of the invention, I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the' scope of the invention as expressed in the claims.

Therefore I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is 1. In a pneumatic pump for molten metal, thev combination with a melting pot and a receptacle located below the fluid metal level inthe melting pot, said receptacle having a valve movable to admit metal to the receptacle from the pot, and having a dis charge tube extending upwardly therefrom from below the liquid level of the receptacle, of automatic means for admitting air under pressure on the metal inthe receptacle intermittently and regularly during the dischargel of the metal.V

2. In a pneumatic pump, the combination with a melting pot and a receptacle located in the melting pot, said receptacle having a valve movable to admit metal to the receptacle from the pot, and having a discharge tube extending from below the liquid level of the receptacle, of automatic means for ad mitting air under pressure on the metal in the receptacle intermittently, whereby the the valve will be periodically closed and metal will alternately be forced out through the discharge tube and in past the valve a plurality of times during the flow of metal up the discharge tube.

3. In a pneumatic pump, the combination with a melting pot and a receptacle located in the meltingpot, saidreceptacle having a valve movable to admit metal to the receptacle-from the pot, and having-a discharge tube extending from below the liquid level of the receptacle, of automatic means for admitting air under pressure on the metal in the receptacle intermittently, said automatit means comprising an air pipe, a three-way valve for connecting the pipe with asource of air under pressure, a shaft, means operated by the shaft for alternately opening and closin g the valve and means for continuously ro tating the shaft during the casting operation.

4:. In a pneumatic pump, the combination with a melting pot and a receptacle located in the melting pot, said receptacle having a valve movable to admit metal to the receptacle from the pot, and having a discharge tube extending from below the liquid'level of the receptacle, of automatic means for admitting air under pressure, on the metal in the receptacle intermittently-,and a pouring spout rotatably mounted on said-v discharge tube so as to be movableto a position over the mold, for the purpose'described.

5. In a pneumatic pump, the combination with a vertical discharge spout having a circular surface provided with openings therethrough communicating with the interior of the tube and means for keeping the metal constantly moving up the spout, of a pour-A ing spout pivotally mounted on said tube and having a nozzle adapted to register with said openings individually in different'positions to deliver molten metal therethrough.

G. In a pneumatic pump for molten metal, the combination with a melting pot and a receptacle located below the fluid metal level in the melting pot, saidreceptacle Ahaving' a discharge tube extending upwardly therefrom from belowthe liquidflevelof the receptacle, of automatic means foradmittin air under pressure on the metal in the receptacle intermittently during the'- discharge off the metal, and a'metal measuring device for receiving the metal and thereafter filling the mold.

In testimony whereof Ihave hereunto affixed4 myv signature.

ISIDORE TORNBERG. 

